- Companies
- Civil engineering
- London
- JCS Engineering Services Limited
JCS Engineering Services Limited
- Company number
- 16478755
- Incorporated
- 28 May 20251 year trading
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Construction of other civil engineering projects n.e.c.; Site preparation; Other specialised construction activities n.e.c.
JCS Engineering Services Limited is a 1-year-old private limited company registered in London, company number 16478755, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 28 February 2027, and its first CT600 is due at HMRC on 27 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where JCS Engineering Services Limited is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
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Shared registered office
2,436 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if JCS Engineering Services Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16478755
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 May 2025 (1 year ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Site preparation (SIC 43120)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in London
Other active civil engineering contractors registered in London.
- JD Lucas Ltd2015
- Jda Track (Maintenance) Limited2022
- Jefferson Traffic Management Ltd2026
- Jegz Construction Ltd2026
- Jep William Limited2014
- JFK Tecelec Limited2014
- Jfshare Company Limited2014
- Jglez Ltd2026
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are JCS Engineering Services Limited's accounts due?
JCS Engineering Services Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is JCS Engineering Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 27 May 2026, due by 27 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is JCS Engineering Services Limited still trading?
JCS Engineering Services Limited is listed as active on the Companies House register (checked 12 Oct 2026). Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does JCS Engineering Services Limited do?
JCS Engineering Services Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Site preparation (SIC 43120); Other specialised construction activities n.e.c. (SIC 43999).
How old is JCS Engineering Services Limited?
JCS Engineering Services Limited was incorporated on 28 May 2025, 1 year ago.
What is the penalty if JCS Engineering Services Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View JCS Engineering Services Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.